How to create a Frontend App which takes some input & sends to Node Server which then returns a user-defined HTML,CSS & JS as separate files which user entered ?

I want to create something like http://ift.tt/2lBBYOM which takes some input & provides a .zip file containing html & cssIdk how to do it even though I checked the source code of the above website is in Vue but Idk the deployed code running on Firebase ?

Submitted October 10, 2017 at 12:22PM by deadcoder0904